Doctoral Dissertations


"A swelling response model has been defined to predict the maximum expansive pressure and strain developed in roof shales associated with Illinois coal mines. This model also can be used to estimate the magnitude of swelling generated within the shale when it is subject to humidity changes caused by atmospheric variation at the mine entrance. The model is dependent principally upon the Moisture Activity Index of the shale and the original humidity level of the environment.

The petrologic and physical parameters characteristic of shales were evaluated and correlated with the corresponding swelling behavior of five sets of shale samples tested under constant strain or unloading conditions. The testing was conducted at different humidity levels so that the influence of the mine environment also could be included in the statistical analysis. Moisture Activity Index, Plastic Index, percent of degraded illite, fabric index and weight percent of clay particles were those of most significance. The Moisture Activity Index was selected to develop the swelling response model because of its close association with the other physical properties, its strong correlation with swelling magnitude and because it may be defined by relatively simple laboratory testing procedures"--Abstract, page ii.


Rockaway, John D.

Committee Member(s)

Elifrits, C. Dale
Barr, David J.
Bolter, Ernst
Aughenbaugh, N. B.


Geosciences and Geological and Petroleum Engineering

Degree Name

Ph. D. in Geological Engineering


University of Missouri--Rolla. Department of Geological Engineering


University of Missouri--Rolla

Publication Date

Fall 1981


xvi, 193 pages

Note about bibliography

Includes bibliographical references (pages 161-174).

Geographic Coverage



© 1981 Scott Lin Huang, All rights reserved.

Document Type

Dissertation - Restricted Access

File Type




Subject Headings

Shale -- Illinois
Swelling soils
Coal mines and mining -- Illinois

Thesis Number

T 4664

Print OCLC #


Electronic OCLC #


Link to Catalog Record

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